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-rw-r--r--toys/pending/ping.c278
1 files changed, 0 insertions, 278 deletions
diff --git a/toys/pending/ping.c b/toys/pending/ping.c
deleted file mode 100644
index 22c571b3..00000000
--- a/toys/pending/ping.c
+++ /dev/null
@@ -1,278 +0,0 @@
-/* ping.c - check network connectivity
- *
- * Copyright 2014 Rob Landley <rob@landley.net>
- *
- * Not in SUSv4.
- *
- * Note: ping_group_range should never have existed. To disable it, do:
- * echo 0 $(((1<<31)-1)) > /proc/sys/net/ipv4/ping_group_range
- * (Android does this by default in its init script.)
- *
- * Yes, I wimped out and capped -s at sizeof(toybuf), waiting for a complaint...
-
-// -s > 4088 = sizeof(toybuf)-sizeof(struct icmphdr), then kernel adds 20 bytes
-USE_PING(NEWTOY(ping, "<1>1t#<0>255=64c#<0=3s#<0>4088=56I:i:W#<0=10w#<0qf46[-46]", TOYFLAG_USR|TOYFLAG_BIN))
-
-config PING
- bool "ping"
- default n
- help
- usage: ping [OPTIONS] HOST
-
- Check network connectivity by sending packets to a host and reporting
- its response.
-
- Send ICMP ECHO_REQUEST packets to ipv4 or ipv6 addresses and prints each
- echo it receives back, with round trip time. Returns true if host alive.
-
- Options:
- -4, -6 Force IPv4 or IPv6
- -c CNT Send CNT many packets (default 3, 0 = infinite)
- -f Flood (print . and \b to show drops, default -c 15 -i 0.2)
- -i TIME Interval between packets (default 1, need root for < .2)
- -I IFACE/IP Source interface or address
- -q Quiet (stops after one returns true if host is alive)
- -s SIZE Data SIZE in bytes (default 56)
- -t TTL Set Time To Live (number of hops)
- -W SEC Seconds to wait for response after -c (default 10)
- -w SEC Exit after this many seconds
-*/
-
-#define FOR_ping
-#include "toys.h"
-
-#include <ifaddrs.h>
-#include <netinet/ip_icmp.h>
-
-GLOBALS(
- long w;
- long W;
- char *i;
- char *I;
- long s;
- long c;
- long t;
-
- struct sockaddr *sa;
- int sock;
- long i_ms;
- unsigned long sent, recv, fugit, min, max;
-)
-
-static void xsendto(int sockfd, void *buf, size_t len, struct sockaddr *dest)
-{
- int rc = sendto(TT.sock, buf, len, 0, dest,
- dest->sa_family == AF_INET ? sizeof(struct sockaddr_in) :
- sizeof(struct sockaddr_in6));
-
- if (rc != len) perror_exit("sendto");
-}
-
-static void summary(int sig)
-{
- if (!(toys.optflags&FLAG_q) && TT.sent && TT.sa) {
- printf("\n--- %s ping statistics ---\n", ntop(TT.sa));
- printf("%lu packets transmitted, %lu received, %ld%% packet loss\n",
- TT.sent, TT.recv, ((TT.sent-TT.recv)*100)/TT.sent);
- printf("round-trip min/avg/max = %lu/%lu/%lu ms\n",
- TT.min, TT.max, TT.fugit/TT.recv);
- }
- TT.sa = 0;
-}
-
-// assumes aligned and can read even number of bytes
-static unsigned short pingchksum(unsigned short *data, int len)
-{
- unsigned short u = 0, d;
-
- // circular carry is endian independent: bits from high byte go to low byte
- while (len>0) {
- d = *data++;
- if (len == 1) d &= 255<<IS_BIG_ENDIAN;
- if (d >= (u += d)) u++;
- len -= 2;
- }
-
- return u;
-}
-
-void ping_main(void)
-{
- struct addrinfo *ai, *ai2;
- struct ifaddrs *ifa, *ifa2 = 0;
- union {
- struct sockaddr_in in;
- struct sockaddr_in6 in6;
- } src_addr, src_addr2;
- struct sockaddr *sa = (void *)&src_addr, *sa2 = (void *)&src_addr2;
- struct pollfd pfd;
- int family = 0, len;
- long long tnext, tW, tnow, tw;
- unsigned short seq = 0, pkttime;
- struct icmphdr *ih = (void *)toybuf;
-
- // Interval
- if (TT.i) {
- long frac;
-
- TT.i_ms = xparsetime(TT.i, 1000, &frac) * 1000;
- TT.i_ms += frac;
- if (TT.i_ms<200 && getuid()) error_exit("need root for -i <200");
- } else TT.i_ms = (toys.optflags&FLAG_f) ? 200 : 1000;
- if (!(toys.optflags&FLAG_s)) TT.s = 56; // 64-PHDR_LEN
- if ((toys.optflags&(FLAG_f|FLAG_c)) == FLAG_f) TT.c = 15;
-
- // ipv4 or ipv6? (0 = autodetect if -I or arg have only one address type.)
- if (toys.optflags&FLAG_6) family = AF_INET6;
- else if (toys.optflags&FLAG_4) family = AF_INET;
- else family = 0;
-
- sigatexit(summary);
-
- // If -I src_addr look it up. Allow numeric address of correct type.
- memset(&src_addr, 0, sizeof(src_addr));
- if (TT.I) {
- if (!(toys.optflags&FLAG_6) && inet_pton(AF_INET, TT.I,
- (void *)&src_addr.in.sin_addr))
- family = AF_INET;
- else if (!(toys.optflags&FLAG_4) && inet_pton(AF_INET6, TT.I,
- (void *)&src_addr.in6.sin6_addr))
- family = AF_INET6;
- else if (getifaddrs(&ifa2)) perror_exit("getifaddrs");
- }
-
- // Look up HOST address, filtering for correct type and interface.
- // If -I but no -46 then find compatible type between -I and HOST
- ai2 = xgetaddrinfo(*toys.optargs, 0, family, 0, 0, 0);
- for (ai = ai2; ai; ai = ai->ai_next) {
-
- // correct type?
- if (family && family!=ai->ai_family) continue;
- if (ai->ai_family!=AF_INET && ai->ai_family!=AF_INET6) continue;
-
- // correct interface?
- if (!TT.I || !ifa2) break;
- for (ifa = ifa2; ifa; ifa = ifa->ifa_next) {
- if (!ifa->ifa_addr || ifa->ifa_addr->sa_family!=ai->ai_family
- || strcmp(ifa->ifa_name, TT.I)) continue;
- sa = (void *)ifa->ifa_addr;
-
- break;
- }
- if (ifa) break;
- }
-
- if (!ai)
- error_exit("no v%d addr for -I %s", 4+2*(family==AF_INET6), TT.I);
- TT.sa = ai->ai_addr;
-
- // Open DGRAM socket
- sa->sa_family = ai->ai_family;
- TT.sock = socket(ai->ai_family, SOCK_DGRAM,
- len = (ai->ai_family == AF_INET) ? IPPROTO_ICMP : IPPROTO_ICMPV6);
- if (TT.sock == -1) {
- perror_msg("socket SOCK_DGRAM %x", len);
- if (errno == EACCES) {
- fprintf(stderr, "Kernel bug workaround (as root):\n");
- fprintf(stderr, "echo 0 9999999 > /proc/sys/net/ipv4/ping_group_range\n");
- }
- xexit();
- }
- if (TT.I && bind(TT.sock, sa, sizeof(src_addr))) perror_exit("bind");
-
- if (TT.t) {
- len = TT.t;
-
- if (ai->ai_family == AF_INET)
- setsockopt(TT.sock, IPPROTO_IP, IP_TTL, &len, 4);
- else setsockopt(TT.sock, IPPROTO_IPV6, IPV6_UNICAST_HOPS, &len, 4);
- }
-
- if (!(toys.optflags&FLAG_q)) {
- printf("Ping %s (%s)", *toys.optargs, ntop(TT.sa));
- if (TT.I) {
- *toybuf = 0;
- printf(" from %s (%s)", TT.I, ntop(sa));
- }
- // 20 byte TCP header, 8 byte ICMP header, plus data payload
- printf(": %ld(%ld) bytes.\n", TT.s, TT.s+28);
- }
- toys.exitval = 1;
-
- tW = tw = 0;
- tnext = millitime();
- if (TT.w) tw = TT.w*1000+tnext;
-
- // Send/receive packets
- for (;;) {
- int waitms = INT_MAX;
-
- // Exit due to timeout? (TODO: timeout is after last packet, waiting if
- // any packets ever dropped. Not timeout since packet was dropped.)
- tnow = millitime();
- if (tW) if (0>=(waitms = tW-tnow) || !(TT.sent-TT.recv)) break;
- if (tw) {
- if (tnow>tw) break;
- else if (waitms>tw-tnow) waitms = tw-tnow;
- // Time to send the next packet?
- } else if (tnext-tnow <= 0) {
- tnext += TT.i_ms;
-
- memset(ih, 0, sizeof(*ih));
- ih->type = (ai->ai_family == AF_INET) ? 8 : 128;
- ih->un.echo.id = getpid();
- ih->un.echo.sequence = ++seq;
- if (TT.s >= 4) *(unsigned *)(ih+1) = tnow;
-
- ih->checksum = 0;
- ih->checksum = pingchksum((void *)toybuf, TT.s+sizeof(*ih));
- xsendto(TT.sock, toybuf, TT.s+sizeof(*ih), TT.sa);
- TT.sent++;
- if ((toys.optflags&(FLAG_f|FLAG_q)) == FLAG_f) xputc('.');
-
- // last packet?
- if (TT.c) if (!--TT.c) {
- if (!TT.W) break;
- tW = tnow + TT.W*1000;
- }
- }
-
- // This is down here so it's against new period if we just sent a packet
- if (!tw && waitms>tnext-tnow) waitms = tnext-tnow;
-
- // wait for next packet or timeout
-
- if (waitms<0) waitms = 0;
- pfd.fd = TT.sock;
- pfd.events = POLLIN;
- if (0>(len = poll(&pfd, 1, waitms))) break;
- if (!len) continue;
-
- len = sizeof(src_addr2);
- len = recvfrom(TT.sock, toybuf, sizeof(toybuf), 0, sa2, (void *)&len);
- TT.recv++;
- TT.fugit += (pkttime = millitime()-*(unsigned *)(ih+1));
-
- // reply id == 0 for ipv4, 129 for ipv6
-
- if (!(toys.optflags&FLAG_q)) {
- if (toys.optflags&FLAG_f) xputc('\b');
- else {
- printf("%d bytes from %s: icmp_seq=%d ttl=%d", len, ntop(sa2),
- ih->un.echo.sequence, 0);
- if (len >= sizeof(*ih)+4)
- printf(" time=%u ms", pkttime);
- xputc('\n');
- }
- }
-
- toys.exitval = 0;
- }
-
- summary(0);
-
- if (CFG_TOYBOX_FREE) {
- freeaddrinfo(ai2);
- if (ifa2) freeifaddrs(ifa2);
- }
-}